CH562617A5 - Ski with vibration damping device - uses spring loaded ball in oil filled cylinder to absorb vibration energy - Google Patents
Ski with vibration damping device - uses spring loaded ball in oil filled cylinder to absorb vibration energyInfo
- Publication number
- CH562617A5 CH562617A5 CH447172A CH447172A CH562617A5 CH 562617 A5 CH562617 A5 CH 562617A5 CH 447172 A CH447172 A CH 447172A CH 447172 A CH447172 A CH 447172A CH 562617 A5 CH562617 A5 CH 562617A5
- Authority
- CH
- Switzerland
- Prior art keywords
- ski
- ball
- vibration
- skis
- vibration damper
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C5/00—Skis or snowboards
- A63C5/06—Skis or snowboards with special devices thereon, e.g. steering devices
- A63C5/075—Vibration dampers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/08—Inertia
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
A hollow cylinder (2) sealed at each end is attached by the screws (5) through a flange to the ski (1). A steel ball (3) with a diameter slightly smaller than the cylinder bore is normally held in mid-position by two compression springs (4). The cylinder (3) is filled with a non-freezing hydraulic oil (6). In the event of the ski being subjected to vertical vibrations the ball (3), because of its inertia, tends to maintain its position so that there is relative motion between the ball and the fluid creating friction which damps the vibration. If necessary more than one such damper can be attached to each ski.
Description
Die Erfindung betrifft einen Ski mit auf der Skioberseite befestigter Schwingungsdämpf-Vorrichtung.
Es ist allgemein bekannt, dass stark vibrierende Skis schlechte Fahreigenschaften aufweisen. Solche Skis zeichnen sich durch schlechte Führung und mangelnde Eisgriffigkeit aus. Besonders anfällig für störende Schwingungen sind Skis, welche mit durchgehenden metallischen Einlagen, Deckschichten und Metallkanten ausgerüstet sind. Man hat schon seit einiger Zeit mittels aufwendiger Konstruktionen nach Lösungen zur Behebung dieser störenden Schwingungen gesucht, so u. a. durch Verwendung von Fiberglas-Deckschichten anstelle von Metall, durch Einbau von Gliederkanten und dämpfenden Gummi-Zwischenlagen. Die damit erzielten Resultate stehen aber in keinem Verhältnis zum Aufwand und den dadurch verursachten Mehrkosten.
Der Erfindung liegt die Aufgabe zugrunde, die Schwingungsdämpfung von Skis ohne konstruktive Änderungen am Skikörper wesentlich zu verbessern.
Erfindungsgemäss wird dies dadurch erreicht, dass ein Schwingungsdämpfer mit einer über einen begrenzten Weg beweglichen Stabilisierungsmasse vorgesehen ist, deren durch die Schwingungsbewegungen des Skis bewirkte Bewegungen mittels Reibwiderstand und Federung gedämpft werden.
Im folgenden wird anhand der beiliegenden Zeichnung ein Ausführungsbeispiel der Erfindung näher beschrieben.
Sie zeigt einen Längsschnitt durch den Vorderteil eines Skis 1 mit dem darauf montierten Schwingungsdämpfer. Der Schwingungsdämpfer besteht aus einem beidseitig abgeschlossenen, zylinderförmigen Gehäuse 2, welches mit einem nicht einfrierenden Spezialstossdämpfer-Öl 6 gefüllt ist. Ebenfalls darin befindet sich eine frei bewegliche Metallkugel 3 mit einem etwas kleineren Durchmesser als der Innendurchmesser des zylindrischen Gehäuses 2. Oben und unten im zylindrischen Gehäuse 2 sind Spiralfedern 4, welche als federnde Anschläge für die Kugel 3 dienen, angebracht. Vibriert der Ski, und mit ihm das Gehäuse 2, so hat die Kugel 3 infolge des Trägheitsmomentes die Tendenz stillzustehen. Dies ergibt eine interne Reibung zwischen der Kugel 3, Flüssigkeit 6 und Gehäuse 2, welche Vibrationen und starke Ausschläge des Skis sofort dämpft.
Mit dem vorliegenden Schwingungsdämpfer für Skis können nicht nur die beim Fahren auftretenden vertikalen Vibrationen, sondern auch die unliebsamen Torsions-Schwingungen viel wirkungsvoller, als es bis jetzt möglich war, gedämpft werden, was eine bessere Eisgriffigkeit und optimalere Skiführung ergibt. Die Dämpfung von Torsions-Vibrationen beruht dabei nicht nur auf der Tatsache, dass die Kugel 3 auch eine gewisse Spielfreiheit in der Querrichtung zum zylindrischen Gehäuse 2 hat, sondern auch infolge der dynamischen Stabilisation des via einen Hebel mit dem Ski verbundenen Gewichtes. Dieser letztere Effekt wird oft bei Helikopter-Rotorblättern zwecks Vermeidung von Flatterbewegungen ausgenützt.
PATENTANSPRUCH
Ski mit auf der Skioberseite befestigter Schwingungsdämpf Vorrichtung, dadurch gekennzeichnet, dass ein Schwingungsdämpfer mit einer über einen begrenzten Weg beweglichen Stabilisierungsmasse vorgesehen ist, deren durch die Schwingungsbewegungen des Skis bewirkte Bewegungen mittels Reibwiderstand und Federung gedämpft werden.
UNTERANSPRÜCHE
1. Ski nach Patentanspruch, dadurch gekennzeichnet, dass der Reibwiderstand hydraulisch erzeugt wird.
2. Ski nach Patentanspruch, dadurch gekennzeichnet, dass der Reibwiderstand mechanisch erzeugt wird.
3. Ski nach Patentanspruch und Unteransprüchen 1 und 2, dadurch gekennzeichnet, dass pro Ski mehr als ein Schwingungsdämpfer angebracht ist.
**WARNUNG** Ende DESC Feld konnte Anfang CLMS uberlappen**.
The invention relates to a ski with a vibration damping device attached to the top of the ski.
It is common knowledge that skis that vibrate heavily have poor handling characteristics. Such skis are characterized by poor guidance and poor ice grip. Skis that are equipped with continuous metallic inserts, cover layers and metal edges are particularly susceptible to disruptive vibrations. For some time it has been looking for solutions to eliminate these disturbing vibrations by means of complex constructions, so u. a. by using fiberglass cover layers instead of metal, by installing link edges and cushioning rubber intermediate layers. However, the results achieved are in no relation to the effort and the additional costs caused by it.
The invention is based on the object of significantly improving the vibration damping of skis without constructive changes to the ski body.
According to the invention, this is achieved in that a vibration damper is provided with a stabilizing mass which is movable over a limited path and whose movements caused by the vibration movements of the ski are damped by means of frictional resistance and suspension.
An exemplary embodiment of the invention is described in more detail below with reference to the accompanying drawing.
It shows a longitudinal section through the front part of a ski 1 with the vibration damper mounted on it. The vibration damper consists of a cylindrical housing 2 which is closed on both sides and which is filled with a non-freezing special shock absorber oil 6. A freely movable metal ball 3 with a slightly smaller diameter than the inner diameter of the cylindrical housing 2 is also located therein. At the top and bottom of the cylindrical housing 2 there are spiral springs 4 which serve as resilient stops for the ball 3. If the ski vibrates, and with it the housing 2, the ball 3 has the tendency to stand still due to the moment of inertia. This results in internal friction between the ball 3, liquid 6 and housing 2, which immediately dampens vibrations and strong deflections of the ski.
With the present vibration damper for skis, not only the vertical vibrations that occur when skiing, but also the unpleasant torsional vibrations can be dampened much more effectively than was previously possible, resulting in better grip on the ice and more optimal ski guidance. The damping of torsional vibrations is based not only on the fact that the ball 3 also has a certain freedom from play in the transverse direction to the cylindrical housing 2, but also as a result of the dynamic stabilization of the weight connected to the ski via a lever. This latter effect is often used in helicopter rotor blades to avoid fluttering movements.
PATENT CLAIM
Ski with a vibration damping device attached to the top of the ski, characterized in that a vibration damper is provided with a stabilizing mass which is movable over a limited path and whose movements caused by the vibration movements of the ski are dampened by means of frictional resistance and suspension.
SUBCLAIMS
1. Ski according to claim, characterized in that the frictional resistance is generated hydraulically.
2. Ski according to claim, characterized in that the frictional resistance is generated mechanically.
3. Ski according to claim and dependent claims 1 and 2, characterized in that more than one vibration damper is attached per ski.
** WARNING ** End of DESC field could overlap beginning of CLMS **.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH447172A CH562617A5 (en) | 1972-03-22 | 1972-03-22 | Ski with vibration damping device - uses spring loaded ball in oil filled cylinder to absorb vibration energy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH447172A CH562617A5 (en) | 1972-03-22 | 1972-03-22 | Ski with vibration damping device - uses spring loaded ball in oil filled cylinder to absorb vibration energy |
Publications (1)
Publication Number | Publication Date |
---|---|
CH562617A5 true CH562617A5 (en) | 1975-06-13 |
Family
ID=4276708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH447172A CH562617A5 (en) | 1972-03-22 | 1972-03-22 | Ski with vibration damping device - uses spring loaded ball in oil filled cylinder to absorb vibration energy |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH562617A5 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2933726A1 (en) * | 1979-08-21 | 1981-03-26 | Fa. Carl Freudenberg, 69469 Weinheim | Vibration damper for machine part oscillating linear motion - has mass in viscoelastic liq., whose physical parameters meet specified equation |
EP0414387A1 (en) * | 1989-07-26 | 1991-02-27 | Paul Robert Juhasz | Ski device |
US5143394A (en) * | 1989-11-24 | 1992-09-01 | Tua Ski S.R.L. | Ski provided with a vibration damping device |
WO2000047913A1 (en) * | 1999-02-10 | 2000-08-17 | Siemens Aktiengesellschaft | Device for damping vibrations in a positioning arm |
EP2484413A1 (en) * | 2011-02-03 | 2012-08-08 | MARKER Deutschland GmbH | Vibration damper, in particular for downhill ski |
CN107401581A (en) * | 2016-05-19 | 2017-11-28 | 拜默实验设备(上海)股份有限公司 | A kind of air Compressor unit for reducing mechanical resonance |
CN108488305A (en) * | 2018-06-20 | 2018-09-04 | 上海理工大学 | A kind of band thickening fluid elastic collision damper |
-
1972
- 1972-03-22 CH CH447172A patent/CH562617A5/en not_active IP Right Cessation
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2933726A1 (en) * | 1979-08-21 | 1981-03-26 | Fa. Carl Freudenberg, 69469 Weinheim | Vibration damper for machine part oscillating linear motion - has mass in viscoelastic liq., whose physical parameters meet specified equation |
EP0414387A1 (en) * | 1989-07-26 | 1991-02-27 | Paul Robert Juhasz | Ski device |
US5816601A (en) * | 1989-07-26 | 1998-10-06 | Ski-Shocks Inc. | Ski device |
US5143394A (en) * | 1989-11-24 | 1992-09-01 | Tua Ski S.R.L. | Ski provided with a vibration damping device |
WO2000047913A1 (en) * | 1999-02-10 | 2000-08-17 | Siemens Aktiengesellschaft | Device for damping vibrations in a positioning arm |
EP2484413A1 (en) * | 2011-02-03 | 2012-08-08 | MARKER Deutschland GmbH | Vibration damper, in particular for downhill ski |
CN107401581A (en) * | 2016-05-19 | 2017-11-28 | 拜默实验设备(上海)股份有限公司 | A kind of air Compressor unit for reducing mechanical resonance |
CN108488305A (en) * | 2018-06-20 | 2018-09-04 | 上海理工大学 | A kind of band thickening fluid elastic collision damper |
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Legal Events
Date | Code | Title | Description |
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PL | Patent ceased |